function sayHello(people: string) {
  return 'hello' + people;
}

let user = 'JohnChen';
console.log(sayHello(user));

export class test {
  arg: string;
  test: string;
  constructor(test: string, arg: string) {
    this.test = test;
    this.arg = arg;
  }

  printData() {
    return this.arg + this.test;
  }
}
